Video of the assassination of Mexican mayoral candidate Alfredo Cabrera has shocked America. But that murder on Wednesday was only one of many. Some 30 political candidates have been murdered during the present election campaign, which will see voters go to the polls on Sunday. Mexico’s democracy is held hostage at the intersection of rampant criminality and vast corruption.

America bears significant responsibility for this. Without America’s illegal drug market, cartels would lack the financial incentive to buy off or shoot police officers, politicians, and each other.